Watch-bow fastener



(No Model.)

0. J-OHANSON.

WATCH BOW FASTENER. No. 468,806. Patented Feb. 16, 1892.

meawea: v Inv'e 70%)" UNITED STATES PATENT OFFICE.

OLOF JOHANSON, OF NEW YORK, N. Y., ASSIGNOR TO THE KEYSTONE WATCH CASECOMPANY, OF PHILADELPHIA, PENNSYLVANIA.

WATCH BOW FASTEN ER.

SPECIFICATION forming part of Letters Patent No. 468,806, dated February16, 1892.

Application filed September 17, 1890. Serial No. 365,272. tNomodel.)

To all whom it may concern:

Be it known that I, OLOF JOHANSON, of the city and county of New York,in the State of 'New York, have invented a new and useful ring to thesleeve or hollow stem to prevent" the removal of the ends of the ringfrom their sockets.

A practical embodim ent of my improvement is represented in theaccompanying drawings, in which Figure 1 is a view in side elevation ofthe pendant and a portion of the watch-case to which it is secured. Fig.2 is a sectional view of the sleeve or hollow stem, showing the positionof the ends of the ring in the sockets with the locking-pins inposition; and Fig. 3 is a view of the ring in detail.

A represents the ring, B the sleeve or hollow stem, to which the ends ofthe ring are secured, and C the watch case. The ends of the ring A,neartheir extremities, are each provided with an annular groove a, whichgroove, when the ends of the ring are adjusted Within their sockets, isintended to occupy a position about midway of the thickness of the wallof the sleeve or hollow stem. This provision, while not essential, ispreferable, because it admits of locating the locking-pins centrally inthe wall of the sleeve or stem, Where they will have a firm support. Thesockets in the sleeve or stem 13 for the reception of the ends of thering are denoted by b,and transversely to the axes of the sockets bperforations b extend through the sleeve B within its wall.

The perforations b m are so located relatively to the grooves a in theends of the ring A that when pins Dare inserted therein the said pinswill extend w thin the margin of the socket Z) and in the grooves a andthereby securely lock the ends of the ring in the sleeve. It will beobserved that the perforations 19 not only extend transversely to theaxes of the sockets b, but also transversely to the axes of the sleeveor hollow stem B, and may therefore be bored more readily ,than whenextending parallel with the axes of the sleeve and without any increaseof the thickness of the sleeve for that purpose. This structure alsodoes away with the necessity or advisability of reinforcing-ears, suchas are commonly employed upon the outside of the sleeve immediatelyaround the outer ends of the sockets which receive the ring.

What I claim as my invention is The'combination, with the sleeve or stemprovided with sockets for the reception of the ends of the ring, of thering having its ends grooved, and pins extending through the sleeve orstem within its wall and through the grooves in the ends of the ring,said pins extending transversely to the axes of the sockets andtransversely to the axes of the sleeve or stem, substantially assetforth.

. OLOF JOI-IANSON.

Witnesses:

FREDK. HAYNES, K. E. PEMBLETON.

